What are the options to repair complete ligament tears in an ankle causing instability?

Options. There are options on procedures used depending on which ligament is involved. Some can be fixed arthroscopic some open. Some need bone anchors . Best to talk to ur doctor.
First line. Surgically, the first line of repair is anatomic repair, meaning repairing the ligaments or augmenting the stability of the ankle without changing/ redirecting the anatomy. The most common of these is called the brostrom-gould repair. If you have any other questions, please let me know.